航空学报 > 2015, Vol. 36 Issue (2): 501-509   doi: 10.7527/S1000-6893.2014.0062

等离子体气动激励控制超声速边界层分离的实验研究

孙权1, 崔巍2, 程邦勤1, 金迪1, 李军1   

  1. 1. 空军工程大学 等离子体动力学重点实验室, 西安 710038;
    2. 清华大学 航天航空学院, 北京 100084
  • 收稿日期:2014-03-18 修回日期:2014-04-16 出版日期:2015-02-15 发布日期:2014-04-21
  • 通讯作者: 崔巍 Tel.: 029-84787527 E-mail: Cuiweis@gmail.com E-mail:Cuiweis@gmail.com
  • 作者简介:孙权 男,博士研究生。主要研究方向:超声速等离子体流控制技术。Tel:029-84787527 Email:steve5761@126.com;崔巍 男,硕士,讲师。主要研究方向:超声速等离子体流控制与点火助燃技术。Tel:029-84787527 Email:Cuiweis@gmail.com
  • 基金资助:

    国家自然科学基金(51336011,51276197,51207169)

Experimental investigation on supersonic boundary layer separation control by plasma aerodynamic actuation

SUN Quan1, CUI Wei2, CHENG Bangqin1, JIN Di1, LI Jun1   

  1. 1. Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi'an 710038, China;
    2. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
  • Received:2014-03-18 Revised:2014-04-16 Online:2015-02-15 Published:2014-04-21
  • Supported by:

    National Natural Science Foundation of China (51336011, 51276197, 51207169)

摘要:

等离子体气动激励与超声速气流相互作用已成为高速流动控制领域的研究热点。激波与边界层相互作用现象广泛存在于超声速飞行器之中。本文进行了等离子体气动激励控制压缩角区和激波诱导边界层分离的实验,通过流场纹影显示和壁面静压测量,研究等离子体气动激励如何影响激波、激波如何影响边界层特性的科学问题。实验结果表明:施加毫秒量级表面电弧放电能够前移压缩角区的诱导斜激波,使分离区后移,分离区域增加,但激波强度减弱,流场总压增加;施加微秒量级表面电弧放电能够抑制激波诱导边界层分离,使分离区减小,流场总压减小。基于实验结果,认为毫秒量级表面电弧放电激励控制超声速气流的主要机理为放电过程的焦耳热效应;微秒量级表面电弧放电激励控制超声速气流的主要机理为焦耳热效应和冲击波效应共同作用。

关键词: 超声速, 激波, 边界层, 等离子体, 流动控制

Abstract:

Plasma aerodynamic actuation and supersonic flow interaction has become the focus of researches. There is a wide range of universal phenomenon of shock wave and boundary layer interaction in supersonic aircraft. Experimental investigation on boundary layer separation induced by ramp and impinging shock wave are performing in supersonic flow by plasma aerodynamic actuation. Through schlieren imaging and wall static pressure results, plasma-shock wave interaction and shock-boundary layer interaction mechanism are studied. Experimental results show that the millisecond plasma actuation can make the shock wave induced by the ramp forward and enlarge the separation area. At the same time, the intensity of shock wave induced by the ramp is weakened. The main control mechanism are Joule heating effect. The microsecond plasma actuation can control the boundary layer separation induced by the impinging shock wave and reduce the separation area but the overall pressure reduced. The main control mechanism is Joule heating effect and impact effect based on experimental results.

Key words: supersonic, shock wave, boundary layer, plasma, flow control

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